Finding the Fourth Proportional to 2,213.69, 3,322.59 and 1,118.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.69 : 3,322.59 = 1,118.83 : x
2. Step 2: Convert to fraction form
   2,213.69/3,322.59 = 1,118.83/x
3. Step 3: Cross multiply
   2,213.69x = 3,322.59 × 1,118.83
4. Step 4: Simplify right side
   2,213.69x = 3,717,393.96
5. Step 5: Solve for x
   x = 3,717,393.96/2,213.69
6. Step 6: Final answer
   x = 1,679.27